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CVE-2018-16841

Quick assessment

Affected
[UNKNOWN] samba
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Samba是Samba团队开发的一套可使UNIX系列的操作系统与微软Windows操作系统的SMB/CIFS网络协议做连结的自由软件。该软件支持共享打印机、互相传输资料文件等。 Samba 4.3.0及之后版本（4.7.12版本、4.8.7版本和4.9.3版本已修复）中存在拒绝服务漏洞，该漏洞源于程序没有正确地处理内存。远程攻击者可利用该漏洞造成拒绝服务（双重释放和崩溃）。

AI Predicted 5.5 Difficulty: Easy EPSS 4.59% · P92

Possible ATT&CK Techniques 1 AI

T1089
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I. Basic Information for CVE-2018-16841

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Samba from version 4.3.0 and before versions 4.7.12, 4.8.7 and 4.9.3 are vulnerable to a denial of service. When configured to accept smart-card authentication, Samba's KDC will call talloc_free() twice on the same memory if the principal in a validly signed certificate does not match the principal in the AS-REQ. This is only possible after authentication with a trusted certificate. talloc is robust against further corruption from a double-free with talloc_free() and directly calls abort(), terminating the KDC process.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
Samba 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Samba是Samba团队开发的一套可使UNIX系列的操作系统与微软Windows操作系统的SMB/CIFS网络协议做连结的自由软件。该软件支持共享打印机、互相传输资料文件等。 Samba 4.3.0及之后版本（4.7.12版本、4.8.7版本和4.9.3版本已修复）中存在拒绝服务漏洞，该漏洞源于程序没有正确地处理内存。远程攻击者可利用该漏洞造成拒绝服务（双重释放和崩溃）。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
[UNKNOWN] samba 4.7.12 -

II. Public POCs for CVE-2018-16841

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III. Intelligence Information for CVE-2018-16841

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Vendor Advisories for CVE-2018-16841 (7)

Same Patch Batch · [UNKNOWN] · 2018-11-28 · 6 CVEs total

CVE-2018-14629 Samba LDAP服务器安全漏洞
CVE-2018-16851 Samba AD DC LDAP服务器安全漏洞
CVE-2018-16852 Samba 安全漏洞
CVE-2018-16853 Samba 安全漏洞
CVE-2018-16857 Samba 安全漏洞

IV. Related Vulnerabilities

Same product: samba
Same vendor: [UNKNOWN]
Same weakness: CWE-416

V. Comments for CVE-2018-16841

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